Lens



[lenz] /lɛnz/

noun, plural lenses.
1.
a piece of transparent substance, usually glass, having two opposite surfaces either both curved or one curved and one plane, used in an optical device in changing the convergence of light rays, as for magnification, or in correcting defects of vision.
2.
a combination of such pieces.
3.
some analogous device, as for affecting sound waves, electromagnetic radiation, or streams of electrons.
4.
Anatomy. .
5.
Geology. a body of rock or ore that is thick in the middle and thinner toward the edges, similar in shape to a biconvex lens.
verb (used with object)
6.
Movies. to film (a motion picture).
[len] /lɛn/
noun
1.
a male given name, form of .
/lɛnz/
noun
1.
a piece of glass or other transparent material, used to converge or diverge transmitted light and form optical images
2.
Also called compound lens. a combination of such lenses for forming images or concentrating a beam of light
3.
a device that diverges or converges a beam of electromagnetic radiation, sound, or particles See electron lens
4.
(anatomy) See crystalline lens
/lenz; French lɑ̃/
noun
1.
an industrial town in N France, in the Pas de Calais department; badly damaged in both World Wars. Pop: 36 206 (1999)
n.

1690s, “glass to regulate light rays,” from Latin lens (genitive lentis) “lentil,” on analogy of the double-convex shape. See lentil. Of the eye from 1719.

In the vernacular of the photographer, anyone crowding to the front of a group, staring into the lens, or otherwise attracting attention to himself is known as a “lens louse.” [“American Photography,” vol. 40, 1946; the term dates from 1915]

lens (lěnz)
n. pl. lens·es

lensed adj.
lens
(lěnz)

A piece of transparent material, such as glass, that forms an image from the rays of light passing through it. (See focal length, refraction, and telescope.)

A clear, almost spherical structure located just behind the pupil of the eye. The lens focuses waves of light on the retina.

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    [lenz-bawrd, -bohrd] /ˈlɛnzˌbɔrd, -ˌboʊrd/ noun, Photography. 1. the usually removable front panel of a view camera or enlarger on which the is mounted.

  • Lensectomy

    lensectomy lens·ec·to·my (lěn-zěk’tə-mē) n. Surgical removal of the lens, usually done by puncture incision through the ciliary disk during vitrectomy.



  • Lensed

    [lenz] /lɛnz/ noun, plural lenses. 1. a piece of transparent substance, usually glass, having two opposite surfaces either both curved or one curved and one plane, used in an optical device in changing the convergence of light rays, as for magnification, or in correcting defects of vision. 2. a combination of such pieces. 3. some […]

  • Lenses

    [lenz] /lɛnz/ noun, plural lenses. 1. a piece of transparent substance, usually glass, having two opposite surfaces either both curved or one curved and one plane, used in an optical device in changing the convergence of light rays, as for magnification, or in correcting defects of vision. 2. a combination of such pieces. 3. some […]



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